:root {
    --color-black: #050607;
    --color-black-soft: #080b10;
    --color-panel: #0f141c;
    --color-paper: #e8f8ff;
    --color-ink: #e5e7eb;
    --color-ink-dark: #020617;
    --color-text-muted: rgba(203, 213, 225, 0.72);
    --color-border: rgba(148, 163, 184, 0.22);
    --color-accent-primary: #00bfff;
    --color-accent-secondary: #ffc60a;
    --color-neutral-mark: #485259;
    --radius-pill: 999px;
    --radius-card: 0.95rem;
    --radius-panel: 1rem;
    --radius-media: 0.8rem;
    --motion-duration-fast: 160ms;
    --motion-duration-base: 0.4s;
    --motion-duration-slide: 0.6s;
    --motion-ease-enter: cubic-bezier(0.16, 1, 0.3, 1);
    --motion-ease-slide: cubic-bezier(0.25, 1, 0.5, 1);
    --shadow-glow: 0 0 50px rgba(0, 191, 255, 0.15);
    --zmk-black: var(--color-black);
    --zmk-black-soft: var(--color-black-soft);
    --zmk-panel: var(--color-panel);
    --zmk-paper: var(--color-paper);
    --zmk-ink: var(--color-ink);
    --zmk-ink-dark: var(--color-ink-dark);
    --zmk-muted: var(--color-text-muted);
    --zmk-line: var(--color-border);
    --zmk-blue: var(--color-accent-primary);
    --zmk-gold: var(--color-accent-secondary);
    --zmk-grey: var(--color-neutral-mark);
    --zmk-accent: var(--color-accent-primary);
}

.slide {
    transition: transform var(--motion-duration-slide) var(--motion-ease-slide), opacity var(--motion-duration-slide) ease-in-out;
    transform: translateX(100%);
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.slide {
    padding: clamp(1.15rem, 4.5vw, 1.55rem) !important;
}

.slide h1 {
    font-size: clamp(2.1rem, 10vw, 2.8rem) !important;
    line-height: 1.05 !important;
    font-weight: 800 !important;
}

.slide h2 {
    font-size: clamp(1.75rem, 8vw, 2.2rem) !important;
    line-height: 1.12 !important;
    font-weight: 800 !important;
}

.slide h3 {
    font-size: clamp(1.45rem, 6.8vw, 1.95rem) !important;
    line-height: 1.15 !important;
    font-weight: 800 !important;
}

.slide h4 {
    font-size: clamp(0.9rem, 3.7vw, 1rem) !important;
    line-height: 1.28 !important;
    font-weight: 750 !important;
}

.slide p,
.slide li,
.slide a {
    font-size: clamp(0.9rem, 3.35vw, 1rem) !important;
    line-height: 1.55 !important;
    font-weight: 550;
}

.slide .eyebrow,
.slide [class*="text-[9px]"],
.slide [class*="text-[10px]"] {
    font-size: 0.74rem !important;
    line-height: 1.2 !important;
    font-weight: 800 !important;
}

.slide [class*="text-[11px]"],
.slide .caption {
    font-size: 0.82rem !important;
    line-height: 1.45 !important;
}

.slide [class*="text-xs"] {
    font-size: 0.86rem !important;
    line-height: 1.45 !important;
}

.slide .badge-text {
    font-size: 0.78rem !important;
    line-height: 1.2 !important;
}

.slide.active {
    transform: translateX(0);
    opacity: 1;
    z-index: 10;
}
.slide.prev {
    transform: translateX(-100%);
    opacity: 0;
}

.no-scrollbar::-webkit-scrollbar {
    display: none;
}
.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* Анімації та підсвічування для кнопок */
@keyframes pulse-cyan {
    0%, 100% { box-shadow: 0 0 10px rgba(0, 191, 255, 0.15); }
    50% { box-shadow: 0 0 20px rgba(0, 191, 255, 0.45); }
}
.glow-btn {
    animation: pulse-cyan 3s infinite;
}

/* Плавний ефект появи для висувного меню */
.drawer-transition {
    transition: transform var(--motion-duration-base) var(--motion-ease-enter);
}

html,
body {
    width: 100%;
    height: var(--app-height, 100svh) !important;
    min-height: var(--app-height, 100svh) !important;
    overflow: hidden;
    overscroll-behavior: none;
}

body {
    background: var(--zmk-black);
    color: var(--zmk-ink);
    display: block !important;
    font-feature-settings: "kern" 1, "liga" 1;
    margin: 0;
    text-rendering: geometricPrecision;
}

#presentation-root {
    height: var(--app-height, 100svh) !important;
    max-height: var(--app-height, 100svh) !important;
    background:
        radial-gradient(circle at 50% 35%, rgba(15, 25, 38, 0.5), transparent 18rem),
        linear-gradient(180deg, var(--zmk-black-soft), var(--zmk-black));
    border-color: rgba(148, 163, 184, 0.2);
    box-shadow: var(--shadow-glow);
}

@supports (height: 100dvh) {
    html,
    body {
        height: var(--app-height, 100dvh) !important;
        min-height: var(--app-height, 100dvh) !important;
    }

    #presentation-root {
        height: var(--app-height, 100dvh) !important;
        max-height: var(--app-height, 100dvh) !important;
    }
}

@media (min-width: 640px) {
    html,
    body {
        height: 100vh !important;
        min-height: 100vh !important;
    }

    body {
        display: flex !important;
        align-items: center;
        justify-content: center;
    }

    #presentation-root {
        height: 92vh !important;
        max-height: 880px !important;
    }
}

#slides-container {
    background:
        radial-gradient(circle at 50% 35%, rgba(15, 25, 38, 0.5) 0%, rgba(5, 6, 7, 1) 100%),
        var(--zmk-black) !important;
}

#presentation-root [class*="border-slate-"] {
    border-color: var(--zmk-line) !important;
}

#presentation-root [class*="bg-slate-"] {
    background-color: rgba(15, 23, 42, 0.56) !important;
}

#presentation-root [class*="text-slate-200"],
#presentation-root [class*="text-slate-300"] {
    color: rgba(226, 232, 240, 0.88) !important;
}

#presentation-root [class*="text-slate-400"] {
    color: rgba(148, 163, 184, 0.88) !important;
}

#presentation-root [class*="text-slate-500"] {
    color: rgba(100, 116, 139, 0.88) !important;
}

#presentation-root [class*="text-slate-950"] {
    color: var(--zmk-ink-dark) !important;
}

.font-heading,
h1,
h2,
h3,
h4 {
    letter-spacing: 0 !important;
}

#presentation-root [class*="tracking-"] {
    letter-spacing: 0 !important;
}

.slide h1,
.slide h2,
.slide h3 {
    text-wrap: balance;
}

.button-surface {
    background: linear-gradient(90deg, var(--zmk-blue), rgba(0, 191, 255, 0.8)) !important;
    color: var(--zmk-ink-dark) !important;
    border-color: rgba(0, 191, 255, 0.24) !important;
    font-size: 1rem !important;
    line-height: 1.2 !important;
    font-weight: 800 !important;
    text-transform: uppercase;
}

.field-note {
    position: relative;
    padding: 1.15rem 1.25rem 1.15rem 1.55rem !important;
}

.field-note::before {
    content: "";
    position: absolute;
    top: 0.9rem;
    bottom: 0.9rem;
    left: -1px;
    width: 3px;
    border-radius: var(--radius-pill);
    background: var(--zmk-accent);
}

.dense-slide {
    padding-top: 1.35rem !important;
    padding-bottom: 1.35rem !important;
}

.dense-slide > div,
.dense-slide .flex-grow {
    min-height: 0;
}

.dense-slide h2 {
    font-size: clamp(1.8rem, 8.2vw, 2.15rem) !important;
    line-height: 1.05 !important;
    margin-bottom: 0.85rem !important;
}

.dense-subtitle {
    font-size: 0.9rem !important;
    line-height: 1.35 !important;
    margin-bottom: 0.75rem !important;
}

.dense-scroll {
    flex: 1 1 auto;
    min-height: 0;
    max-height: none !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 1rem;
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 191, 255, 0.55) transparent;
}

.dense-scroll::-webkit-scrollbar {
    display: block;
    width: 3px;
}

.dense-scroll::-webkit-scrollbar-thumb {
    background: rgba(0, 191, 255, 0.55);
    border-radius: var(--radius-pill);
}

.dense-card {
    padding: 0.72rem 0.8rem !important;
    gap: 0.75rem !important;
    border-radius: var(--radius-media) !important;
}

.dense-card h4,
.dense-card h3 {
    font-size: 0.82rem !important;
    line-height: 1.18 !important;
    letter-spacing: 0 !important;
}

.dense-card p {
    font-size: 0.78rem !important;
    line-height: 1.32 !important;
}

.dense-card .dense-icon {
    width: 2rem !important;
    height: 2rem !important;
}

.dense-step {
    padding-bottom: 0.15rem;
}

.dense-step h4 {
    font-size: 0.95rem !important;
    line-height: 1.16 !important;
}

.dense-step p {
    font-size: 0.86rem !important;
    line-height: 1.35 !important;
}

.logo-mark span:first-child {
    background: var(--zmk-blue) !important;
    color: var(--zmk-ink-dark) !important;
}

.logo-mark span:nth-child(2) {
    background: var(--zmk-grey) !important;
    color: white !important;
}

.logo-mark span:last-child {
    background: var(--zmk-gold) !important;
    color: var(--zmk-ink-dark) !important;
}

.site-logo {
    display: block;
    width: 82px;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.42));
}

.logo-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    border-radius: var(--radius-media);
}

.logo-link:focus-visible {
    outline: 2px solid var(--zmk-gold);
    outline-offset: 4px;
}

.topbar .site-logo {
    width: 72px;
}

#slide-drawer .site-logo {
    width: 94px;
}

.topbar {
    height: 4.75rem !important;
    padding-left: 1.25rem !important;
    padding-right: 1.25rem !important;
    background: rgba(0, 0, 0, 0.4) !important;
    backdrop-filter: blur(18px);
}

.icon-button {
    width: 3rem !important;
    height: 3rem !important;
    border-radius: var(--radius-panel) !important;
    background: rgba(15, 23, 42, 0.48) !important;
    border: 1px solid rgba(148, 163, 184, 0.18);
}

.slide-index-pill {
    font-size: 0.95rem !important;
    line-height: 1 !important;
    font-weight: 800 !important;
    padding: 0.78rem 1.05rem !important;
    border-radius: var(--radius-pill) !important;
    color: var(--zmk-blue) !important;
    background: rgba(15, 23, 42, 0.6) !important;
    border-color: rgba(148, 163, 184, 0.2) !important;
}

#slide-drawer {
    width: 100% !important;
    background:
        radial-gradient(circle at 20% 0%, rgba(0, 191, 255, 0.12), transparent 14rem),
        var(--zmk-black) !important;
    border-color: rgba(148, 163, 184, 0.22) !important;
    box-shadow: 30px 0 90px rgba(0, 0, 0, 0.58);
    backdrop-filter: blur(22px);
}

.drawer-header {
    gap: 1rem;
}

#close-drawer-btn {
    width: 2.8rem !important;
    height: 2.8rem !important;
    flex: 0 0 auto;
}

.drawer-item {
    width: 100%;
    min-height: 3.2rem;
    padding: 0.72rem 0.75rem;
    border: 1px solid transparent;
    border-radius: var(--radius-card);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(148, 163, 184, 0.92);
    text-align: left;
    transition: background var(--motion-duration-fast) ease, color var(--motion-duration-fast) ease, border-color var(--motion-duration-fast) ease, transform var(--motion-duration-fast) ease;
}

.drawer-item:hover,
.drawer-item:focus-visible {
    color: var(--zmk-paper);
    background: rgba(15, 23, 42, 0.64);
    border-color: rgba(148, 163, 184, 0.22);
    transform: translateX(2px);
    outline: none;
}

.drawer-item.is-active {
    color: var(--zmk-blue);
    background: rgba(0, 191, 255, 0.1);
    border-color: rgba(0, 191, 255, 0.34);
}

.drawer-number {
    width: 1.8rem;
    height: 1.8rem;
    border-radius: var(--radius-pill);
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    color: rgba(148, 163, 184, 0.92);
    background: rgba(15, 23, 42, 0.72);
    font-size: 0.74rem;
    font-weight: 800;
}

.drawer-item.is-active .drawer-number {
    color: var(--zmk-blue);
    background: rgba(15, 23, 42, 0.86);
    border: 1px solid var(--zmk-blue);
}

.drawer-title {
    min-width: 0;
    font-size: 0.92rem;
    line-height: 1.2;
    font-weight: 750;
}

@media (min-width: 640px) {
    #slide-drawer {
        width: min(90vw, 23rem) !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    .slide,
    .drawer-transition,
    .glow-btn,
    [class*="animate-"] {
        animation: none !important;
        transition: none !important;
    }
}